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Many applications generate and consume temporal data and retrieval of time series is a key processing step in many application domains. Dynamic time warping (DTW) distance between time series of size N and M is computed relying on a dynamic…

Databases · Computer Science 2012-08-02 K. Selçuk Candan , Rosaria Rossini , Maria Luisa Sapino , Xiaolan Wang

Although traditional symbolic reasoning methods are highly interpretable, their application in knowledge graph link prediction is limited due to their low computational efficiency. In this paper, we propose a new neural symbolic reasoning…

Artificial Intelligence · Computer Science 2022-04-20 Yu-hao Wu , Hou-biao Li

This paper formulates the problem of learning discriminative features (\textit{i.e.,} segments) from networked time series data considering the linked information among time series. For example, social network users are considered to be…

Machine Learning · Computer Science 2016-12-23 Haishuai Wang , Jia Wu , Peng Zhang , Chengqi Zhang

Modulation recognition is an important task in radio signal processing. Most of the current researches focus on supervised learning. However, in many real scenarios, it is difficult and cost to obtain the labels of signals. In this letter,…

Signal Processing · Electrical Eng. & Systems 2021-07-27 Qi Xuan , Xiaohui Li , Zhuangzhi Chen , Dongwei Xu , Shilian Zheng , Xiaoniu Yang

Deep convolutional neural networks (CNNs) have shown a strong ability in mining discriminative object pose and parts information for image recognition. For fine-grained recognition, context-aware rich feature representation of object/scene…

Computer Vision and Pattern Recognition · Computer Science 2021-01-19 Ardhendu Behera , Zachary Wharton , Pradeep Hewage , Asish Bera

Connectionist temporal classification (CTC) is a popular sequence prediction approach for automatic speech recognition that is typically used with models based on recurrent neural networks (RNNs). We explore whether deep convolutional…

Computation and Language · Computer Science 2018-02-16 Kalpesh Krishna , Liang Lu , Kevin Gimpel , Karen Livescu

Dynamic Textures (DTs) are sequences of images of moving scenes that exhibit certain stationarity properties in time such as smoke, vegetation and fire. The analysis of DT is important for recognition, segmentation, synthesis or retrieval…

Computer Vision and Pattern Recognition · Computer Science 2017-03-17 Vincent Andrearczyk , Paul F. Whelan

Temporal modeling still remains challenging for action recognition in videos. To mitigate this issue, this paper presents a new video architecture, termed as Temporal Difference Network (TDN), with a focus on capturing multi-scale temporal…

Computer Vision and Pattern Recognition · Computer Science 2021-04-02 Limin Wang , Zhan Tong , Bin Ji , Gangshan Wu

Segmentation and classification of cell nuclei in histopathology images using deep neural networks (DNNs) can save pathologists' time for diagnosing various diseases, including cancers, by automating cell counting and morphometric…

Computer Vision and Pattern Recognition · Computer Science 2023-10-06 Amruta Parulekar , Utkarsh Kanwat , Ravi Kant Gupta , Medha Chippa , Thomas Jacob , Tripti Bameta , Swapnil Rane , Amit Sethi

Recent works have demonstrated that global covariance pooling (GCP) has the ability to improve performance of deep convolutional neural networks (CNNs) on visual classification task. Despite considerable advance, the reasons on…

Computer Vision and Pattern Recognition · Computer Science 2020-03-26 Qilong Wang , Li Zhang , Banggu Wu , Dongwei Ren , Peihua Li , Wangmeng Zuo , Qinghua Hu

Multivariate time-series (MTS) anomaly detection is critical in domains such as service monitor, IoT, and network security. While multi-model methods based on selection or ensembling outperform single-model ones, they still face…

Machine Learning · Computer Science 2026-01-06 Wei Hu , Zewei Yu , Jianqiu Xu

In this paper, we introduce a novel hierarchical aggregation design that captures different levels of temporal granularity in action recognition. Our design principle is coarse-to-fine and achieved using a tree-structured network; as we…

Computer Vision and Pattern Recognition · Computer Science 2020-06-09 Ahmed Mazari , Hichem Sahbi

Recognizing instances at different scales simultaneously is a fundamental challenge in visual detection problems. While spatial multi-scale modeling has been well studied in object detection, how to effectively apply a multi-scale…

Computer Vision and Pattern Recognition · Computer Science 2019-02-19 Da Zhang , Xiyang Dai , Yuan-Fang Wang

The paper presents a novel method of finding a fragment in a long temporal sequence similar to the set of shorter sequences. We are the first to propose an algorithm for such a search that does not rely on computing the average sequence…

Data Structures and Algorithms · Computer Science 2024-09-04 Łukasz Borchmann , Dawid Jurkiewicz , Filip Graliński , Tomasz Górecki

Many real-world applications require aligning two temporal sequences, including bioinformatics, handwriting recognition, activity recognition, and human-robot coordination. Dynamic Time Warping (DTW) is a popular alignment method, but can…

Machine Learning · Computer Science 2021-09-21 Sridhar Mahadevan , Anup Rao , Georgios Theocharous , Jennifer Healey

In this work, we consider the problem of sequence-to-sequence alignment for signals containing outliers. Assuming the absence of outliers, the standard Dynamic Time Warping (DTW) algorithm efficiently computes the optimal alignment between…

Computer Vision and Pattern Recognition · Computer Science 2021-08-30 Nikita Dvornik , Isma Hadji , Konstantinos G. Derpanis , Animesh Garg , Allan D. Jepson

Graph neural networks, which generalize deep neural network models to graph structured data, have attracted increasing attention in recent years. They usually learn node representations by transforming, propagating and aggregating node…

Machine Learning · Computer Science 2019-05-21 Yao Ma , Suhang Wang , Charu C. Aggarwal , Jiliang Tang

Convolutional neural networks (CNNs) have been extensively applied for image recognition problems giving state-of-the-art results on recognition, detection, segmentation and retrieval. In this work we propose and evaluate several deep…

Computer Vision and Pattern Recognition · Computer Science 2015-04-14 Joe Yue-Hei Ng , Matthew Hausknecht , Sudheendra Vijayanarasimhan , Oriol Vinyals , Rajat Monga , George Toderici

Recent techniques to solve photorealistic style transfer within deep convolutional neural networks (CNNs) generally require intensive training from large-scale datasets, thus having limited applicability and poor generalization ability to…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Sunwoo Kim , Soohyun Kim , Seungryong Kim

The receptive field (RF), which determines the region of time series to be ``seen'' and used, is critical to improve the performance for time series classification (TSC). However, the variation of signal scales across and within time series…

Machine Learning · Computer Science 2022-12-21 Qiao Xiao , Boqian Wu , Yu Zhang , Shiwei Liu , Mykola Pechenizkiy , Elena Mocanu , Decebal Constantin Mocanu